My son just moved into an old house in Pittsburgh and was told that he needs to bleed the radiators.
Since he grew up in Georgia, we never had boilers so the questions are:
1. Does he bleed each individual radiator "after" starting the boiler up for the first time or "before"?
2. Or I guess the correct question is, what is the step by step procedure and how often does he do this? (He says he has a special key that he was told is to be to bleed the radiators.
Thanks for the help.